Disable all table constraints in Oracle

Question

How can I disable all table constrains in Oracle with a single command? This can be either for a single table, a list of tables, or for all tables.

Answer 1

This is another way for disabling constraints (it came from https://asktom.oracle.com/pls/asktom/f?p=100:11:2402577774283132::::P11_QUESTION_ID:399218963817)

WITH qry0 AS
       (SELECT    'ALTER TABLE '
               || child_tname
               || ' DISABLE CONSTRAINT '
               || child_cons_name
                 disable_fk
              ,   'ALTER TABLE '
               || parent_tname
               || ' DISABLE CONSTRAINT '
               || parent.parent_cons_name
                 disable_pk
          FROM (SELECT a.table_name child_tname
                      ,a.constraint_name child_cons_name
                      ,b.r_constraint_name parent_cons_name
                      ,LISTAGG ( column_name, ',') WITHIN GROUP (ORDER BY position) child_columns
                  FROM user_cons_columns a
                      ,user_constraints b
                 WHERE a.constraint_name = b.constraint_name AND b.constraint_type = 'R'
                GROUP BY a.table_name, a.constraint_name
                        ,b.r_constraint_name) child
              ,(SELECT a.constraint_name parent_cons_name
                      ,a.table_name parent_tname
                      ,LISTAGG ( column_name, ',') WITHIN GROUP (ORDER BY position) parent_columns
                  FROM user_cons_columns a
                      ,user_constraints b
                 WHERE a.constraint_name = b.constraint_name AND b.constraint_type IN ('P', 'U')
                GROUP BY a.table_name, a.constraint_name) parent
         WHERE child.parent_cons_name = parent.parent_cons_name
           AND (parent.parent_tname LIKE 'V2_%' OR child.child_tname LIKE 'V2_%'))
SELECT DISTINCT disable_pk
  FROM qry0
UNION
SELECT DISTINCT disable_fk
  FROM qry0;

works like a charm